| 单词 | friedmann model |
| 释义 | Friedmann model[ freed-muhn ] / ˈfrid mən / noun Astronomy.any model of the universe deduced from a homogeneous, isotropic solution of Einstein's field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for expansion or contraction of the universe. Also called Friedmann universe. Origin of Friedmann modelnamed after Alexander Friedmann, (1885–1925), Russian mathematician, who made the necessary calculations in 1922 Words nearby Friedmann modelFriedländer's bacillus, Friedländer's pneumonia, Friedman, Friedman curve, Friedman, Milton, Friedmann model, Friedreich's ataxia, Friedreich's disease, Friedreich's sign, Friedrich, Friedrichshafen Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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